openocd: fix SPDX tag format for files .c

[fw/openocd] / src / jtag / drivers / buspirate.c

diff --git a/src/jtag/drivers/buspirate.c b/src/jtag/drivers/buspirate.c
index 59819513b4af151d99b6dff8a9e62583a000ca5a..03b48e68b219b8dbc11db004e7359fd81d71d7a7 100644 (file)
--- a/src/jtag/drivers/buspirate.c
+++ b/src/jtag/drivers/buspirate.c
@@ -1,20 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
 /***************************************************************************
  *   Copyright (C) 2010 by Michal Demin                                    *
  *   based on usbprog.c and arm-jtag-ew.c                                  *
  *   Several fixes by R. Diez in 2013.                                     *
- *                                                                         *
- *   This program is free software; you can redistribute it and/or modify  *
- *   it under the terms of the GNU General Public License as published by  *
- *   the Free Software Foundation; either version 2 of the License, or     *
- *   (at your option) any later version.                                   *
- *                                                                         *
- *   This program is distributed in the hope that it will be useful,       *
- *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
- *   GNU General Public License for more details.                          *
- *                                                                         *
- *   You should have received a copy of the GNU General Public License     *
- *   along with this program.  If not, see <http://www.gnu.org/licenses/>. *
  ***************************************************************************/
 
 #ifdef HAVE_CONFIG_H
@@ -285,7 +274,7 @@ static bool read_and_discard_all_data(const int fd)
 
 static int buspirate_init(void)
 {
-       if (buspirate_port == NULL) {
+       if (!buspirate_port) {
                LOG_ERROR("You need to specify the serial port!");
                return ERROR_JTAG_INIT_FAILED;
        }
@@ -466,58 +455,58 @@ COMMAND_HANDLER(buspirate_handle_port_command)
        if (CMD_ARGC < 1)
                return ERROR_COMMAND_SYNTAX_ERROR;
 
-       if (buspirate_port == NULL)
+       if (!buspirate_port)
                buspirate_port = strdup(CMD_ARGV[0]);
 
        return ERROR_OK;
 
 }
 
-static const struct command_registration buspirate_command_handlers[] = {
+static const struct command_registration buspirate_subcommand_handlers[] = {
        {
-               .name = "buspirate_adc",
+               .name = "adc",
                .handler = &buspirate_handle_adc_command,
                .mode = COMMAND_EXEC,
                .help = "reads voltages on adc pins",
                .usage = "",
        },
        {
-               .name = "buspirate_vreg",
+               .name = "vreg",
                .usage = "<1|0>",
                .handler = &buspirate_handle_vreg_command,
                .mode = COMMAND_CONFIG,
                .help = "changes the state of voltage regulators",
        },
        {
-               .name = "buspirate_pullup",
+               .name = "pullup",
                .usage = "<1|0>",
                .handler = &buspirate_handle_pullup_command,
                .mode = COMMAND_CONFIG,
                .help = "changes the state of pullup",
        },
        {
-               .name = "buspirate_led",
+               .name = "led",
                .usage = "<1|0>",
                .handler = &buspirate_handle_led_command,
                .mode = COMMAND_EXEC,
                .help = "changes the state of led",
        },
        {
-               .name = "buspirate_speed",
+               .name = "speed",
                .usage = "<normal|fast>",
                .handler = &buspirate_handle_speed_command,
                .mode = COMMAND_CONFIG,
                .help = "speed of the interface",
        },
        {
-               .name = "buspirate_mode",
+               .name = "mode",
                .usage = "<normal|open-drain>",
                .handler = &buspirate_handle_mode_command,
                .mode = COMMAND_CONFIG,
                .help = "pin mode of the interface",
        },
        {
-               .name = "buspirate_port",
+               .name = "port",
                .usage = "/dev/ttyUSB0",
                .handler = &buspirate_handle_port_command,
                .mode = COMMAND_CONFIG,
@@ -526,6 +515,17 @@ static const struct command_registration buspirate_command_handlers[] = {
        COMMAND_REGISTRATION_DONE
 };
 
+static const struct command_registration buspirate_command_handlers[] = {
+       {
+               .name = "buspirate",
+               .mode = COMMAND_ANY,
+               .help = "perform buspirate management",
+               .chain = buspirate_subcommand_handlers,
+               .usage = "",
+       },
+       COMMAND_REGISTRATION_DONE
+};
+
 static const struct swd_driver buspirate_swd = {
        .init = buspirate_swd_init,
        .switch_seq = buspirate_swd_switch_seq,
@@ -800,7 +800,7 @@ static void buspirate_tap_append(int tms, int tdi)
                int bit_index = tap_chain_index % 8;
                uint8_t bit = 1 << bit_index;
 
-               if (0 == bit_index) {
+               if (bit_index == 0) {
                        /* Let's say that the TAP shift operation wants to shift 9 bits,
                           so we will be sending to the Bus Pirate a bit count of 9 but still
                           full 16 bits (2 bytes) of shift data.
@@ -1178,13 +1178,13 @@ static int buspirate_serial_setspeed(int fd, char speed, cc_t timeout)
 
        /* set the serial port parameters */
        fcntl(fd, F_SETFL, 0);
-       if (0 != tcgetattr(fd, &t_opt))
+       if (tcgetattr(fd, &t_opt) != 0)
                return -1;
 
-       if (0 != cfsetispeed(&t_opt, baud))
+       if (cfsetispeed(&t_opt, baud) != 0)
                return -1;
 
-       if (0 != cfsetospeed(&t_opt, baud))
+       if (cfsetospeed(&t_opt, baud) != 0)
                return -1;
 
        t_opt.c_cflag |= (CLOCAL | CREAD);
@@ -1206,7 +1206,7 @@ static int buspirate_serial_setspeed(int fd, char speed, cc_t timeout)
        /* Note that, in the past, TCSANOW was used below instead of TCSADRAIN,
           and CMD_UART_SPEED did not work properly then, at least with
           the Bus Pirate v3.5 (USB). */
-       if (0 != tcsetattr(fd, TCSADRAIN, &t_opt)) {
+       if (tcsetattr(fd, TCSADRAIN, &t_opt) != 0) {
                /* According to the Linux documentation, this is actually not enough
                   to detect errors, you need to call tcgetattr() and check that
                   all changes have been performed successfully. */